3rd gen rear diff help!!
#1
Senior Member
Thread Starter
iTrader: (2)
Join Date: May 2008
Posts: 433
Likes: 0
Received 0 Likes
on
0 Posts
3rd gen rear diff help!!
brought a rear diff with disc setup for my 82 firebird.......the guy said it is posi
Its a GM 10-bolt with disc on it the code on it says 6HS which according to www.fbodymotorsports.com is from a 1984 Camaro or trans am.
Code Ratio Year Locking
6HS 3.73 84 YES
the doubts I have is
I put the diff on Jack stands and rotated the yoke. Only one of the wheel hubs turn. then I tried rotating each of the hubs. each of them force the yoke to turn but not the other hub........So even though the code says locking , is there a chance that it is not ?
Any fool proof way to say what it actually is.??
Also comparing to my stock rear end, it doesnt have the mounts for attaching a rear sway bar. I thought all f-bodies had rear sway bars regardless.
Any way to fix that ?? what is it called so I can check with the local auto store.
I will try to post pictures tomorrow.
Any comments appriciated
Thanks
Its a GM 10-bolt with disc on it the code on it says 6HS which according to www.fbodymotorsports.com is from a 1984 Camaro or trans am.
Code Ratio Year Locking
6HS 3.73 84 YES
the doubts I have is
I put the diff on Jack stands and rotated the yoke. Only one of the wheel hubs turn. then I tried rotating each of the hubs. each of them force the yoke to turn but not the other hub........So even though the code says locking , is there a chance that it is not ?
Any fool proof way to say what it actually is.??
Also comparing to my stock rear end, it doesnt have the mounts for attaching a rear sway bar. I thought all f-bodies had rear sway bars regardless.
Any way to fix that ?? what is it called so I can check with the local auto store.
I will try to post pictures tomorrow.
Any comments appriciated
Thanks
#2
Re: 3rd gen rear diff help!!
Some of the 7.5 rear ends came with the Governor Lock differential, which doesn't lock until one wheel starts to spin. There is only one way to be sure of what is in a rear end. Remove the cover and look inside. You CAN NOT be sure unless you do this.
Some of the 7.5 rear ends came with the Auburn posi, which wears out quickly. These act like a standard differential when they wear out.
Some of the 7.5 rear ends came with the Auburn posi, which wears out quickly. These act like a standard differential when they wear out.
#3
Senior Member
iTrader: (2)
Join Date: Jul 2007
Location: Tampa/New Hampshire
Posts: 777
Likes: 0
Received 4 Likes
on
4 Posts
Car: 91 camaro RS, 87 T/A
Engine: 350 TBI, 305 TPI
Transmission: 700r4
Axle/Gears: 4th Gen 3.42/BW 3.45
Re: 3rd gen rear diff help!!
You dont need connectors for a rear sway bar.......They attach to the body via endlinks, and bolt down to the axle using a clamp and some bolts. You should be able to take your sway bar off your old rear end, and attach it to the new rear end with no problem.
#4
Moderator
Join Date: Jul 1999
Location: 51°N 114°W, 3500'
Posts: 17,110
Likes: 0
Received 120 Likes
on
101 Posts
Car: 87 IROC L98
Engine: 588 Alcohol BBC
Transmission: Powerglide
Axle/Gears: Ford 9"/31 spline spool/4.86
Re: 3rd gen rear diff help!!
A locking diff is not a posi. As mentioned above, locking usually mean a gov lock diif. Although they work fine, they're not designed for high power and can easily be broken. The only way to know if it's a locking or open diff is to pull the cover and look inside.
#5
Senior Member
Thread Starter
iTrader: (2)
Join Date: May 2008
Posts: 433
Likes: 0
Received 0 Likes
on
0 Posts
Re: 3rd gen rear diff help!!
Thanks for the info so far ..... here are some pictures.
Can I tell if this is a posi and if its a auburn or Govern lock ?
Also a question about the location of the calipers. The left one is on the diff cover side and the right one is on the yoke side, Compared to my IROC both calipers are on the diff cover side.... :?
Can I just unbolt it and put it on the right side ??
Can I tell if this is a posi and if its a auburn or Govern lock ?
Also a question about the location of the calipers. The left one is on the diff cover side and the right one is on the yoke side, Compared to my IROC both calipers are on the diff cover side.... :?
Can I just unbolt it and put it on the right side ??
#6
Senior Member
iTrader: (1)
Join Date: Apr 2007
Location: Palm Coast, FL
Posts: 668
Likes: 0
Received 3 Likes
on
2 Posts
Car: 86 T/A & 88 GTA
Engine: 305 LB9 TPI & 350 LO5 TPI
Transmission: Jasper 4L60 x2
Axle/Gears: 2.77/posi LSD & 2.73/posi LSD
Re: 3rd gen rear diff help!!
that is a locking rear. when you hit the gas both wheels will spin. i know that alot of these came on the s-10's and blazers. posi or limited slip's have a spring pack inside. i dont know about the caliper part of your question.
#7
Moderator
iTrader: (5)
Re: 3rd gen rear diff help!!
[QUOTE=screeminchicken;3897508]Also a question about the location of the calipers. The left one is on the diff cover side and the right one is on the yoke side, Compared to my IROC both calipers are on the diff cover side.... :?
Normal with Delco-Moraine iron calipers, 82-88. PBR calipers, 89-92, are located on the back side.
JamesC
Normal with Delco-Moraine iron calipers, 82-88. PBR calipers, 89-92, are located on the back side.
JamesC
Last edited by JamesC; 09-24-2008 at 07:15 AM.
Trending Topics
#8
Re: 3rd gen rear diff help!!
That is the Governor Lock. It's made by Eaton and has been used in GM trucks from the mid 60s. They are not very durable, but will work well for stock applications. Most of the time the small gear on the governor will break and cause it to stop locking. It will act like a standard differential when that happens. They can be repaired, but you must have the special tool to disassemble it.
#9
Senior Member
Thread Starter
iTrader: (2)
Join Date: May 2008
Posts: 433
Likes: 0
Received 0 Likes
on
0 Posts
Re: 3rd gen rear diff help!!
That is the Governor Lock. It's made by Eaton and has been used in GM trucks from the mid 60s. They are not very durable, but will work well for stock applications. Most of the time the small gear on the governor will break and cause it to stop locking. It will act like a standard differential when that happens. They can be repaired, but you must have the special tool to disassemble it.
And how do I make sure its not brocken ?? Will the pop the car up and spin the wheel method say anything ?
----------
Is it possible to take the 4 axle bolts out and swap right one to sit on the diff cover side ...... any issues or risk with that ? or should I just leave it alone ?
Last edited by screeminchicken; 09-24-2008 at 12:25 PM. Reason: Automerged Doublepost
#10
Senior Member
iTrader: (2)
Join Date: Jul 2007
Location: Tampa/New Hampshire
Posts: 777
Likes: 0
Received 4 Likes
on
4 Posts
Car: 91 camaro RS, 87 T/A
Engine: 350 TBI, 305 TPI
Transmission: 700r4
Axle/Gears: 4th Gen 3.42/BW 3.45
Re: 3rd gen rear diff help!!
Just leave it how it is, those brakes work fine for stock stuff, they came like that after all, if you have a set of PBRs though, i would definatly put those on over the Iron ones, but as for switching them there fine where they are.
#11
Re: 3rd gen rear diff help!!
With the wheels off spin one axle as hard as you can. If it is working then it should lock. Watch the governor while you turn the axle and see if it spins. If it doesn't spin then it is broke.
#12
Junior Member
Join Date: Aug 2008
Location: CLEARWATER FL
Posts: 4
Likes: 0
Received 0 Likes
on
0 Posts
Car: 1992 RS CAMARO
Engine: L03 5.0 TBI
Transmission: 700R4 & T5
Axle/Gears: 7.5 ALBURN LSD 3.73 DISC BRAKES
Re: 3rd gen rear diff help!!
I HAVE THE SAME REAR END. IT ALSO CAME OUT OF A 1984 Z 28. THE LIMITED SLIP ARE WEAK IT WILL WORK BUT CAN BREAK. I PUT AN ALBURN CARRIER THEY ARE STRONGER. ABOUT THE BRAKES LEAVE THEM ALONE THEY WOKK GREAT. IF YOU WONT CERAMIX PADS YOU CAN USE THE SAME PADS THAT FIT ON THE FRONT OF THIRD GENS .ALSO THE AXLE ARE 26 SPLIN.
#13
Supreme Member
Join Date: Dec 2000
Location: stallings,n.c.
Posts: 1,271
Likes: 0
Received 1 Like
on
1 Post
Car: 1989 camaro rs convertable
Engine: 305 tbi
Transmission: 700r4
Axle/Gears: 7.5"3.42 gears forth gen 2000 camar
Re: 3rd gen rear diff help!!
i just got a gov lock rear.it has some busted pinion shims.can someone direct me to a tuturial on how to take it apart?i removed the pinion shaft but can't get the gears out.
Thread
Thread Starter
Forum
Replies
Last Post
1992rs/ss
NW Indiana and South Chicago Suburb
12
05-19-2020 07:02 PM
1992rs/ss
Engine/Drivetrain/Suspension Parts for Sale
16
01-28-2016 09:58 PM